[C++] 백준 5032번 : 탄산 음료

https://www.acmicpc.net/problem/5032

#include <iostream>

using namespace std;

int main() {

int e,f,c;

cin >> e >> f >> c;

int cnt = 0, tmp;

tmp = e + f;

do {

cnt = cnt + tmp / c;

tmp = tmp / c + tmp % c;

} while (tmp >= c);

cout << cnt;

}